Hand operated printing press



C. E. CARLSEN HAND OPERATED PRINTING PRESS f pril 27, 1937.

Filed Dec. 7, 193s 3 shees-sneet 1 lu 1 mi;

lNvENToR Caz-Z .Edward Ca/sera BY 6,1 f

ATTORNEY April A27, 1937. c. E. cARLsENv HAND OPERATED PRINTING PRESS Filed Dec. '7, 1936 3 Sheets-Sheet 2 INVENTOR dh/anizrefa BY I Q1 wiwi? l ATTORNEY April 27, 1937- c. E. cARLsEN 2,078,751

HAND OPERATED PRINTING PRESS Filed Deo. 7, 1936 INVENTOR BY f ATTORNEY Patented Apr. 27, 1937 UNITED STATES PATENT OFFICE 8 Claims.

This invention relates to new and useful improvements in a hand operated printing press.

This invention has for an object the construction of a printing press which is characterized by the fact that it has a stationary printing bed base supporting a pair oi spaced L-shaped arms in side alignment with each other and pivotally mounted thereon, which in turn pivotally support a handle associated with a type holding form pivotally depending therefrom at a point offset from the pivot support of the handle.

Still further the invention contemplates the provision of an inverted U-shaped arm pivotally mounted at one end on said bed base and having its other end horizontally extended and connected with said type holding form.

Still further the invention proposes the provision of a hanging attachment mounted on the latter end of the U-shaped arm and cooperative with said handle and said type holding form.

Another one of the objects of this invention is to arrange said U-shaped arm at an inclined position from the vertical and extending away from said L-shaped arms.

Still further the invention proposes the association of a table extension with the printing press and other details generally desirable or necessary with a printing machine.

Another one of the objects of this inventionis to arrange the U-shaped arm of two sections joined at the junction of the arms of the U-shape and adapted'to be connected together in various positions tocontrol the relative supporting of the type holding form.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:-

Fig. 1 is a plan View of a hand operated printing press constructed according to this invention.

(Cl. lOl-298) Fig. 6 is a plan View of the printing press in an open position.

Fig. 7 is a sectional view taken on the line 1-1 of Fig. 6.

Fig. 8 is a sectional View taken on the line 8-8 of Fig. 6.

Fig. 9 is a fragmentary view similar to a portion of Fig. 2 and illustrating the central portion of a U-shaped arm constructed according to a modification of the invention.

The hand operated printing press, according to this invention, includes a stationary printing bed base Ill. A pair of spaced L-shaped arms II are arranged in side alignment with each other and are pivotally mounted by pintles I2 at their lower ends upon said base Ill. A handle I3 is pivotally supported between the upper ends of the L- shaped arms II by a spindle I4. A type holding form I5 pivotally depends from the handle I3 at a point offset from the pivot support i4 of the handle. An inverted U-shaped arm I6 is pivotally mounted at one end I 6a by a pintle Il to the base IU. This arm I6 has its other end I6b extended horizontally and flexibly or resiliently connected with the type holding form I5. The U-shaped arm I6 is inclined slightly rearwards from the vertical direction away from the L- shaped arms Il.

The printing bed base I 0 is provided with a removable sheet covering element I9 which is held in position by several clips or clamps 20. Thus, if the element I9 becomes soiled it may be replaced. An extension table ZI is provided with several projecting fingers 22 which are adapted to engage into receiving openings in the base I9 for supporting the extension table 2I. This extension table is adapted to support papers which are to be printed or which have already been printed. The base I0 is provided with lugs 23 which support the pintle I2 on the ends of which the L-shaped levers lI are mounted.

The L-shaped levers II have their short bottom arms II21 extending normally slightly upe wards from the horizontal direction when the printing press is in its closed position. The vertical arms IIb extend upwards at an inclination and terminate in tip portions IIc substantially vertical and normally in the closed position of the printing press located in a vertical plate in the -center of the arms IIa. With this arrangement it is possible to obtain a very great pressure between the type holding form and the printing bed. The L-shaped handles II are disposed upon holding form I5.

the outer sides of the printing bed I0 as clearly shown in Fig. 1.

The handle I3 has a lug portion I3a which extends at right angles from one side and which support is pivotally supported by the pintle I4. The handle I3 is formed with projecting rear end portions I31D forming bearings for rods 25. These rods are resiliently urged in one direction by springs 25 coaxially thereon and acting against the bearings at one of their ends and heads 21 upon the outer ends of the rods. The inner ends of the rods 25 are pivotally connected by a pintle 28 with a bearing housing 2,9. These bearing housings have spaced bearing supports receiving shafts 30 from inking rollers 3 I. These inking rollers are urged by the springs 26 against an ink supply disc 33. This ink supply disc is rotatively supported by a stud 34 upon the arm ISb.

There are a plurality of radial lugs 31 arranged upon the rear face of the ink disc 33 and are engageable with a pawl 38 mounted upon an arcuate bracket 39, projecting from the handle I3. This pintle 33 is pivotally supported by a Dntle 4B intermediate of its ends and its rear end is provided with lug portions 38a disposed on opposite sides of the bracket 3S to limit its pivoting to a small amplitude. The arrangement is such that when the handle I3 is moved to open the printing pressto the position shown in Fig. S-the pintle 3B Will engage against the projections 31 and partially turn the inking disc 33. Thus, for each operation of the press the inking disc is partially turned. On the back stroke of the handle I3 the pintle 38 idles past the projections 31 and so the inking disc is turned in one direction only.

There is a stud 4I which engages through a thick and resilient washer 42, preferably of rubber, and which is firmly mounted upon the type It is this rubber washer 42 which forms the resilient or exible connection between the type holding form and the arm I6b of the U-shaped arm I6. This washer 42 allows the type holding form to slightly move in one direction or another so that it engages against the printing bed in a proper flat position. There are a pair of tracks 43 mounted along the sides of the type holding form I5. ,There are rollers 44 mounted upon the shafts 3!) and adapted to run along the tracks 431. 'Ihese tracks 43 extend at one of their ends to the printing disc 33. They are arranged so that when the handle I3 is moved to the open position the inking rollers 30 are run along the bottom sides of the tracks 43 and pass the printing form I5 which is mounted in the printing holding form I5 and so ink the printing form.

The printing'form I5' is removably mounted in position by set screws 45. There are several protective holding fingers 46 which extend beneath the type holding form and in the closed position of the form, extend through grooves 41 in the type holding form. These fingers 46 are mounted upon a shaft 48 which is rotative upon the printing bed and held against the printing bed by springs 46. These ngers are also equipped with a cam finger 49 cooperative with a cam nger 53 mounted upon the pintle I'I to raise holding ngers 46 when cam finger 5@ acts on cam nger 49. The arrangement is such that when the U-shaped arm I3 is pivoted backwards as shown in Fig. 8 the cams 50 and 49 engage each other to wrap the iingers 46. Thus a sheet of paper may be slipped beneath the iingers,

There are several paper guiding elements 5I and 52 mounted upon the printing bed and'on the table extension 2l so that papers fed the printing press may be properly positioned.

The operation of the device is as follows:-

Fig. 2 shows the press in a closed position. To open the press the outer end of the handle I3 is moved upwards. The pivot 26 has a tendency to move about the pivot I4 as a center along the arc AB. But in reality the pivot 26 will not move along this arc because the L-shaped arms II are pivotally mounted and recede as the handle I3 is lifted. The free end Itb of the U-shaped arm must travel in an arc such as the arc CD since it pivots about the pintle I1. As the type holding form I5 is substantially rigidly mounted on the arm I 5b it must move along with the arm I6. Consequently, the pintle 26 must `travel along the arc AB. It is possible for the pintle 26 to move alongthe arc AB because the L-shaped arms B will pivot downwards along the arc EF. The press thus opens up to a position as shown in Fig. 8. The springs 26 urge the inking rollers I8 against the face of the inking disc 33 and then the tracks 43. Y

To close the printing press the handle I3 is merely moved downwards. The parts then assume positions shown in Fig. 2 and there is a great mechanical advantage for urging the printing form against the printing bed.

In Fig. 9 there is a modified form of the invention in which there is a vertical U-shaped arm I 6 very similar to the arm I8 but formed of adjacent sections I6d and IIe. These adjacent sections are connected at the center or bent portion of the U-shape. They are connected by several bolts 51. Between the contact ends there are a plurality of shims 58 of different thicknesses. lectively and replaced as desired for slightly moving together or moving apart the arms I Ii and |66 and so adjusting the relative support of the type holding form I5 to the U-shaped arm I6. It is thus possible to adjust the press to compensate for wear or disintegration of the rubber washer 42 or inability of the rubber washer to hold the type holding form with suicient flexibility so that it properly engages the printing bed.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as dened in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:-

l. In a hand operated printing press, a stationary printing bed, a pair of spaced L-sha-ped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point ofset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type hold- These shims may be removed seing form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms.

2. In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point oiset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms, said L-shaped arms having their bottom arm sections disposed slightly upwards when the printing press is closed and their vertical arms extending upwards at an angle and terminating in the vertical tips disposed in planes at the center of the bottom arm sections.

3. In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point offset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U- shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms, said handle being provided with an offset lug, and it is this lug portion which is pivotally connected with said L-shaped levers.

4. In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point oiset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms, said handle being provided with an oiset lug, and it is this lug portion which is pivotally connected with said L-shaped levers, and being disposed substantially in the same plane with the vertical ends of the L-shaped levers when the printing press is closed so as to present a large mechanical advantage to the printing press in the closed position.

5. In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a

handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point oiset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being reclined slightly from the vertical direction and away from said L-shaped arms, said type holding form being slightly resiliently and flexibly connected with the said end of the U-shaped arm.

6. In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mountedattheir lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point olset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms, said type holding form being slightly resiliently and flexibly connected with the said end of the U-shaped arm,

by reason of a supporting stud mounted on the type holding form and associated with a rubber or other resilient Washer in intimate contact with the end of the U-shaped arm.

7. In a hand operated printing press, a stationary printing bed, a pair of spaced L-spaced arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point oiset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form, and said U-shaped arm being inclined slightly from the vertical direction and away from said L-shaped arms, said U- shaped arm being also formed of two sections jointed at the center of the U-shaped arm, and means for connecting these sections at different relative positions to control the relative position of the type holding form with other parts of the printing press.

8, In a hand operated printing press, a stationary printing bed, a pair of spaced L-shaped arms in side alignment with each other pivotally mounted at their lower ends on said bed, a handle pivotally supported between the upper ends of said L-shaped arms, a type holding form pivotally depending from said handle at a point offset from the pivot support of said handle, an inverted U-shaped arm pivotally mounted at one end on said bed and having its other end horizontally extended and connected with said type holding form, an inking attachment mounted on the latter end of said U-shaped arm and cooperative with said handle and type holding form; and said U-shaped arm ferent relative positions to control the relative being inclined slightly from the vertical direcposition of the type holding form with other tion and awayfrom said L-shaped arms, said parts of the printing press, the arm sections of U-shaped arm being also formed of two secsaid U-shaped arm being separated by remov- 5 tions jointed at the center of the U-shaped arm, able shims.

and means for connecting these sections at dif- CARL EDWARD CARLSEN. 

